US5732985A - Coupling hardware - Google Patents

Coupling hardware Download PDF

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Publication number
US5732985A
US5732985A US08/550,913 US55091395A US5732985A US 5732985 A US5732985 A US 5732985A US 55091395 A US55091395 A US 55091395A US 5732985 A US5732985 A US 5732985A
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Prior art keywords
hole
press
pipe
inner pipe
fit
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US08/550,913
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Masashi Suzuki
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Okawa Screw Manufacturing Co Ltd
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Okawa Screw Manufacturing Co Ltd
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Priority to US08/550,913 priority Critical patent/US5732985A/en
Assigned to OKAWA SCREW MANUFACTURING CO., LTD. reassignment OKAWA SCREW MANUFACTURING CO., LTD. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: SUZUKI, MASASHI
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L19/00—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts
    • F16L19/02—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member
    • F16L19/0212—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member using specially adapted sealing means
    • F16L19/0225—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member using specially adapted sealing means without sealing rings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L33/00—Arrangements for connecting hoses to rigid members; Rigid hose connectors, i.e. single members engaging both hoses
    • F16L33/20—Undivided rings, sleeves or like members contracted on the hose or expanded in the hose by means of tools; Arrangements using such members
    • F16L33/207—Undivided rings, sleeves or like members contracted on the hose or expanded in the hose by means of tools; Arrangements using such members only a sleeve being contracted on the hose

Definitions

  • the present invention relates to a coupling hardware device or simply a coupling, for connecting hydraulic hose or the like.
  • a coupling 64 which connects a brake pipe 60 and a rubber hose 62 of a brake device of an automobile, is formed by an outer pipe 66 and an inner pipe 68.
  • the outer pipe 66 is cylindrical with a flange 70 formed at the outer periphery of an intermediate portion thereof.
  • a rubber hose crimping portion 72 is formed at one side of the flange 70, and a screw connecting portion 74 is formed at the other side of the flange 70.
  • the rubber hose crimping portion 72 is a thin-walled cylinder. After an end portion of the rubber hose 62 is inserted into the rubber hose crimping portion 72, the rubber hose 62 and the rubber hose crimping portion 72 are connected by caulking. Further, a screw groove is formed in the inner wall of the screw connecting portion 74, and a flare nut 78 is screwed therewith. The rubber hose crimping portion 72 and the screw connecting portion 74 are separated by a separating wall 80, and communicate through a through-hole 82 formed in the central portion of the separating wall 80.
  • the inner pipe 68 is inserted into and fixed to the through-hole 82.
  • the inner pipe 68 is a steel pipe at one end of which a truncated cone shaped seat portion 84 is formed.
  • the brake pipe 60 has a flare portion 86 formed by gradually increasing the diameter of an end of the brake pipe 60 which, is fixed to the seat portion 84 in a pressure-contact state, so that a flared-type pipe joint is formed.
  • the inner pipe 68 is inserted from the screw connecting portion 74 side and is fixed by copper brazing in a state in which the seat portion 84 projects from the through-hole 82.
  • the copper brazing in order to prevent oil leaks, the copper brazing must be carried out accurately with the axial center of the inner pipe 68 being aligned with the center of the through-hole 82, and dexterity and much work are required. Further, copper brazing leads to an increase in costs, and the hardness of the inner pipe 68 and the flange 70 deteriorates due to the effect of the heat of the copper brazing.
  • an object of the present invention is to provide a coupling which fixing facilitates fixing of the inner pipe, and in which airtightness is maintained so that oil leaks do no not occur.
  • the present invention provides a coupling for communicating pipe bodies.
  • the coupling comprises an outer pipe to respective ends of which are connected, via an inner pipe which is inserted into and fixed to, a through-hole formed in an interior portion of the outer pipe.
  • the inner pipe includes a fixing member provided at one end portion of the inner pipe which fixes the inner pipe to the through-hole, and the fixing member comprises: a seat surface portion larger than a diameter of the through-hole and abutting a surface at a peripheral edge of the through-hole; a press-fit portion inserted in the through-hole and having a taper surface whose diameter decreases from the seat surface portion in a direction of insertion of the, i.e., unidirectionally; and an annular groove into which enters a portion of an inner peripheral wall of the through-hole which is plastically deformed by the press-fit portion.
  • the fixing member is fixed to the through-hole formed in the interior portion of the outer pipe, and the inner pipe is supported by the fixing member.
  • the press-fit portion of the fixing member When the press-fit portion of the fixing member is press-fit into the through-hole, due to the taper surface, the axial center of the inner pipe is aligned with the center of the through-hole, and the press-fit portion fits tightly to an inner peripheral wall of the through-hole while plastically deforming the inner peripheral wall.
  • a portion of the inner peripheral wall of the through-hole, which portion is plastically deformed by the press-fit portion enters into the annular groove.
  • the seat surface portion abuts and fits tightly to the surface at the peripheral edge of the through-hole. Due to the fixing member, the through-hole is in a completely airtight state.
  • FIG. 1 is a sectional view of a coupling relating to a first embodiment of the present invention
  • FIG. 3A is a partial sectional view illustrating a state in which a fixing member is inserted into a through-hole of the outer pipe;
  • FIG. 3B is a partial sectional view illustrating a state in which an inner peripheral wall of the through-hole plastically deforms
  • FIG. 3C is a partial sectional view illustrating a state in which the fixing member is completely inserted into and fixed to the through-hole;
  • FIG. 4 is a partial sectional view illustrating a state in which a fixing member of a coupling relating to a second embodiment of the present invention is completely inserted into and fixed to a through-hole;
  • a coupling 10 relating to the first preferred embodiment is formed by an outer pipe 12 and an inner pipe 14.
  • the outer pipe 12 is cylindrical with a flange 16 formed on the outer periphery of an intermediate portion thereof.
  • a rubber hose crimping portion 18 is formed at one side of the flange 16, and a screw connecting portion 20 is formed at the other side of the flange 16.
  • the rubber hose crimping portion 18 is a thin-walled cylinder. After an end portion of a rubber hose 22 serving as a brake hose is inserted into the rubber hose crimping portion 18, the rubber hose 22 and the rubber hose crimping portion 18 are connected by caulking. A nut portion 24 is formed on the outer peripheral portion of the screw connecting portion 20, and functions as a spanner detent.
  • the rubber hose crimping portion 18 and the screw connecting portion 20 are separated by a separating wall 26, and communicate via a through-hole 28 formed in a central portion of the separating wall 26.
  • the pipe-shaped inner pipe 14 is inserted in and fixed to the through-hole 28.
  • One end of the inner pipe 14 extends within the rubber hose crimping portion 18.
  • the other end of the inner pipe 14 projects within the screw connecting portion 20.
  • a fixing member 30 is formed at the outer periphery of this other end of the inner pipe 14. The gap between the inner pipe 14 and the through-hole 28 is completely closed by the fixing member 30.
  • the fixing member 30 has a seat surface portion 32, a seat portion 34 and a press-fit portion 38.
  • the seat surface portion 32 is cylindrical and abuts the surface at the peripheral edge of the through-hole 28.
  • the seat portion 34 is truncated cone shaped, and the diameter thereof decreases from the seat surface portion 82 in the direction of pulling out the inner pipe 14.
  • the press-fit portion 38 has a taper surface 36 and fits into the through-hole 28.
  • the taper surface 36 is truncated cone shaped.
  • the diameter thereof is smaller than that of the seat surface portion 32 and decreases toward the rubber hose crimping portion 18 side.
  • the length of the press-fit portion 38 is approximately equal to the length of the through-hole 28.
  • the outer diameter of the intermediate portion of the press-fit portion 38 is approximately equal to the inner diameter of the through-hole 28.
  • An annular groove 40 which is cut down a step, is formed between the press-fit portion 38 and the seat surface portion 32.
  • a screw groove is formed in the inner wall of the screw connecting portion 20, and a screw portion 44 of a flare nut 42 is screwed therewith.
  • a brake pipe 46 is inserted through the flare nut 42.
  • a flare portion 48 whose diameter increases in a fan-like shape is formed at the end of the brake pipe 46. Accordingly, by fastening the flare nut 42 to the screw connecting portion 20, the flare portion 48 and the seat portion 34 are press-fitted, and the brake pipe 46 and the rubber hose 22 are connected via the inner pipe 14.
  • the seat surface portion 32 is planar (i.e., has a slope of 0 degrees).
  • the seat surface portion 32 may have a slope such that the center thereof protrudes toward the rubber hose crimping portion 18 side.
  • the slope may be any arbitrary slope up to about 30 degrees.
  • the airtightness maintained so that oil leaks do not occur not only is the airtightness maintained so that oil leaks do not occur, but also, the strength against the pulling out of the inner pipe 14 from the outer pipe 12 is greatly improved.
  • annular groove 50 is formed in the tip end side of the press-fit portion 88.
  • the plastically deformed inner peripheral wall of the through-hole 28 enters into the annular groove 50.
  • a press-fit portion 56 is cylindrical, and a taper surface 54 is formed at the connecting portion of the press-fit portion 56 and the seat surface portion 32.
  • An annular groove 52 is formed in the press-fit portion 56, and the plastically deformed inner peripheral wall of the through-hole 28 enters into the annular groove 52.
  • the coupling hardware is not limited to the above-described embodiments; it suffices that, at least, the inner peripheral wall of the through-hole plastically deforms and the plastically deformed portion enters into the annular groove.
  • the present invention has the above-described structure, work for fixing the inner pipe is facilitated, and airtightness is maintained so that oil leaks do not occur.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Branch Pipes, Bends, And The Like (AREA)

Abstract

A coupling in which work for fixing an inner pipe is facilitated, and in which airtightness is maintained such that oil leaks do not occur. A fixing member is fixed to a through-hole formed in an interior portion of an outer pipe. The inner pipe is supported by the fixing member. When a press-fit portion of the fixing member is press-fit into the through-hole, due to a taper surface, an axial center of the inner pipe is aligned with a center of the through-hole, and the press-fit portion fits tightly to an inner peripheral wall of the through-hole while plastically deforming the inner peripheral wall. A portion of the inner peripheral wall of the through-hole, which portion is plastically deformed by the press-fit portion, enters into an annular groove. A seat surface portion abuts and fits tightly to a surface at a peripheral edge of the through-hole. Due to the fixing member, the through-hole is in a completely airtight state.

Description

BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a coupling hardware device or simply a coupling, for connecting hydraulic hose or the like.
2. Description of the Related Art
As illustrated in FIG. 6, a coupling 64, which connects a brake pipe 60 and a rubber hose 62 of a brake device of an automobile, is formed by an outer pipe 66 and an inner pipe 68. The outer pipe 66 is cylindrical with a flange 70 formed at the outer periphery of an intermediate portion thereof. A rubber hose crimping portion 72 is formed at one side of the flange 70, and a screw connecting portion 74 is formed at the other side of the flange 70.
The rubber hose crimping portion 72 is a thin-walled cylinder. After an end portion of the rubber hose 62 is inserted into the rubber hose crimping portion 72, the rubber hose 62 and the rubber hose crimping portion 72 are connected by caulking. Further, a screw groove is formed in the inner wall of the screw connecting portion 74, and a flare nut 78 is screwed therewith. The rubber hose crimping portion 72 and the screw connecting portion 74 are separated by a separating wall 80, and communicate through a through-hole 82 formed in the central portion of the separating wall 80.
The inner pipe 68 is inserted into and fixed to the through-hole 82. The inner pipe 68 is a steel pipe at one end of which a truncated cone shaped seat portion 84 is formed. The brake pipe 60 has a flare portion 86 formed by gradually increasing the diameter of an end of the brake pipe 60 which, is fixed to the seat portion 84 in a pressure-contact state, so that a flared-type pipe joint is formed.
In the conventional coupling 64, the inner pipe 68 is inserted from the screw connecting portion 74 side and is fixed by copper brazing in a state in which the seat portion 84 projects from the through-hole 82.
However, in order to prevent oil leaks, the copper brazing must be carried out accurately with the axial center of the inner pipe 68 being aligned with the center of the through-hole 82, and dexterity and much work are required. Further, copper brazing leads to an increase in costs, and the hardness of the inner pipe 68 and the flange 70 deteriorates due to the effect of the heat of the copper brazing.
SUMMARY OF THE INVENTION
In view of the aforementioned, an object of the present invention is to provide a coupling which fixing facilitates fixing of the inner pipe, and in which airtightness is maintained so that oil leaks do no not occur.
In order to achieve the above object, the present invention provides a coupling for communicating pipe bodies. The coupling comprises an outer pipe to respective ends of which are connected, via an inner pipe which is inserted into and fixed to, a through-hole formed in an interior portion of the outer pipe. The inner pipe includes a fixing member provided at one end portion of the inner pipe which fixes the inner pipe to the through-hole, and the fixing member comprises: a seat surface portion larger than a diameter of the through-hole and abutting a surface at a peripheral edge of the through-hole; a press-fit portion inserted in the through-hole and having a taper surface whose diameter decreases from the seat surface portion in a direction of insertion of the, i.e., unidirectionally; and an annular groove into which enters a portion of an inner peripheral wall of the through-hole which is plastically deformed by the press-fit portion.
In the coupling of the present invention, the fixing member is fixed to the through-hole formed in the interior portion of the outer pipe, and the inner pipe is supported by the fixing member.
When the press-fit portion of the fixing member is press-fit into the through-hole, due to the taper surface, the axial center of the inner pipe is aligned with the center of the through-hole, and the press-fit portion fits tightly to an inner peripheral wall of the through-hole while plastically deforming the inner peripheral wall. Here, a portion of the inner peripheral wall of the through-hole, which portion is plastically deformed by the press-fit portion, enters into the annular groove. The seat surface portion abuts and fits tightly to the surface at the peripheral edge of the through-hole. Due to the fixing member, the through-hole is in a completely airtight state.
The above and other objects, features and advantages of the present invention will become apparent from the following description and the appended claims taken in conjunction with the accompanying drawings in which preferred embodiments of the present invention are shown by way of illustrative example.
BRIEF DESCRIPTION OF THE DRAWINGS
The invention will now be described with reference to the accompanying drawings wherein:
FIG. 1 is a sectional view of a coupling relating to a first embodiment of the present invention;
FIG. 2 is a side view illustrating a connection relation between an inner pipe and an outer pipe of the coupling to the first embodiment;
FIG. 3A is a partial sectional view illustrating a state in which a fixing member is inserted into a through-hole of the outer pipe;
FIG. 3B is a partial sectional view illustrating a state in which an inner peripheral wall of the through-hole plastically deforms;
FIG. 3C is a partial sectional view illustrating a state in which the fixing member is completely inserted into and fixed to the through-hole;
FIG. 4 is a partial sectional view illustrating a state in which a fixing member of a coupling relating to a second embodiment of the present invention is completely inserted into and fixed to a through-hole;
FIG. 5 is a partial sectional view illustrating a state in which a fixing member of a coupling relating to a third embodiment of the present invention is completely inserted into and fixed to a through-hole; and
FIG. 6 is a sectional view of a conventional coupling.
DESCRIPTION OF THE PREFERRED EMBODIMENTS
As illustrated in FIG. 1, a coupling 10 relating to the first preferred embodiment is formed by an outer pipe 12 and an inner pipe 14. The outer pipe 12 is cylindrical with a flange 16 formed on the outer periphery of an intermediate portion thereof. A rubber hose crimping portion 18 is formed at one side of the flange 16, and a screw connecting portion 20 is formed at the other side of the flange 16.
The rubber hose crimping portion 18 is a thin-walled cylinder. After an end portion of a rubber hose 22 serving as a brake hose is inserted into the rubber hose crimping portion 18, the rubber hose 22 and the rubber hose crimping portion 18 are connected by caulking. A nut portion 24 is formed on the outer peripheral portion of the screw connecting portion 20, and functions as a spanner detent.
The rubber hose crimping portion 18 and the screw connecting portion 20 are separated by a separating wall 26, and communicate via a through-hole 28 formed in a central portion of the separating wall 26.
The pipe-shaped inner pipe 14 is inserted in and fixed to the through-hole 28. One end of the inner pipe 14 extends within the rubber hose crimping portion 18. The other end of the inner pipe 14 projects within the screw connecting portion 20. A fixing member 30 is formed at the outer periphery of this other end of the inner pipe 14. The gap between the inner pipe 14 and the through-hole 28 is completely closed by the fixing member 30.
As illustrated in FIG. 2, the fixing member 30 has a seat surface portion 32, a seat portion 34 and a press-fit portion 38. The seat surface portion 32 is cylindrical and abuts the surface at the peripheral edge of the through-hole 28. The seat portion 34 is truncated cone shaped, and the diameter thereof decreases from the seat surface portion 82 in the direction of pulling out the inner pipe 14. The press-fit portion 38 has a taper surface 36 and fits into the through-hole 28. The taper surface 36 is truncated cone shaped. The diameter thereof is smaller than that of the seat surface portion 32 and decreases toward the rubber hose crimping portion 18 side. The length of the press-fit portion 38 is approximately equal to the length of the through-hole 28. The outer diameter of the intermediate portion of the press-fit portion 38 is approximately equal to the inner diameter of the through-hole 28. An annular groove 40, which is cut down a step, is formed between the press-fit portion 38 and the seat surface portion 32.
As illustrated in FIG. 1, a screw groove is formed in the inner wall of the screw connecting portion 20, and a screw portion 44 of a flare nut 42 is screwed therewith. A brake pipe 46 is inserted through the flare nut 42. A flare portion 48 whose diameter increases in a fan-like shape is formed at the end of the brake pipe 46. Accordingly, by fastening the flare nut 42 to the screw connecting portion 20, the flare portion 48 and the seat portion 34 are press-fitted, and the brake pipe 46 and the rubber hose 22 are connected via the inner pipe 14.
The processes for fixing the inner pipe 14 to the through-hole 28 of the outer pipe 12 will be described hereinafter.
As shown in FIG. 3A, when the inner pipe 14 is inserted through the through-hole 28 from the screw connecting portion 20, the taper surface 36 of the press-fit portion 38 abuts the edge of the through-hole 28. Here, as illustrated in FIG. 3B, when the inner pipe 14 is pushed further in, the taper surface 36 of the press-fit portion 38 plastically deforms the edge portion of the through-hole 28. While the axial center of the inner pipe 14 is aligned with the center of the through-hole 28, the press-fit portion 38 is fit tightly to the inner peripheral wall of the through-hole 28. Moreover, as shown in FIG. 3C, when the inner pipe 14 is pushed even further in, the seat surface portion 32 abuts the surface at the peripheral edge of the through-hole 28, and the edge portion of the through-hole 28 which has been plastically deformed enters into the annular groove 40 such that the fixing member 30 is completely fit tightly to the through-hole 28 without the seat surface portion 32 having to be forced to enter the inner peripheral wall of the through-hole 28. The airtightness resulting from this tight fit is maintained both by the portion of the inner peripheral wall of the through-hole 28 which portion has plastically deformed and entered into the annular groove 40, and by the inner peripheral wall of the through-hole 28 and the taper surface 36 of the press-fit portion 38.
In this way, in the coupling hardware 10 of the first preferred embodiment, by merely press-fitting the inner pipe 14 into the through-hole 28, the work for mounting the inner pipe 14 is completed, and the airtightness is maintained so that oil leaks do not occur.
In the above description, the seat surface portion 32 is planar (i.e., has a slope of 0 degrees). However, the seat surface portion 32 may have a slope such that the center thereof protrudes toward the rubber hose crimping portion 18 side. The slope may be any arbitrary slope up to about 30 degrees.
Further, in the first preferred embodiment, not only is the airtightness maintained so that oil leaks do not occur, but also, the strength against the pulling out of the inner pipe 14 from the outer pipe 12 is greatly improved.
An experiment in which the press-fit portion 38 was press-fit into the through-hole 28 was conducted in a case in which the length of the press-fit portion 38 was 3 mm, the slope of the seat surface portion 32 was 10 degrees, and the outer pipe 12 was unannealed. The results of this experiment were that the press-fit load was 779.6 kgf, and the pull-out load was 681.6 kgf. When the same experiment was conducted using a conventional coupling, the press-fit load was 332.4 kgf, and the pull-out load was 288.8 kgf. Therefore, the strength against pull-out of the present embodiment is 2.4 times greater than that of the conventional coupling; any concerns of the inner pipe 14 being pulled out during insertion of the hose have disappeared completely.
Next, couplings relating to second and third preferred embodiments will be described.
As illustrated in FIG. 4, in the second preferred embodiment, an annular groove 50 is formed in the tip end side of the press-fit portion 88. The plastically deformed inner peripheral wall of the through-hole 28 enters into the annular groove 50. Further, in the third preferred embodiment illustrated in FIG. 5, a press-fit portion 56 is cylindrical, and a taper surface 54 is formed at the connecting portion of the press-fit portion 56 and the seat surface portion 32. An annular groove 52 is formed in the press-fit portion 56, and the plastically deformed inner peripheral wall of the through-hole 28 enters into the annular groove 52.
Various variations of the coupling relating to the present invention can be envisaged. The coupling hardware is not limited to the above-described embodiments; it suffices that, at least, the inner peripheral wall of the through-hole plastically deforms and the plastically deformed portion enters into the annular groove.
As the present invention has the above-described structure, work for fixing the inner pipe is facilitated, and airtightness is maintained so that oil leaks do not occur.

Claims (3)

What is claimed is:
1. A coupling comprising an outer pipe and an inner pipe for communicating a pipe body connected to an end of said outer pipe with another pipe body,
said outer pipe having a through-hole formed in an interior portion thereof, said through-hole being surrounded by an abutment surface;
said inner pipe including a fixing member provided at one end portion of said inner pipe by which said inner pipe is fixed to said through-hole of said outer pipe by insertion of said inner pipe into said outer pipe, and wherein said fixing member comprises:
a seat surface portion larger than a diameter of said through-hole and abutting said abutment surface at a peripheral edge of said through-hole;
a press-fit portion inserted in said through-hole and having a unidirectionally tapered surface whose maximum diameter is larger than the diameter of said through-hole and decreases from said seat surface portion in a direction of insertion of said press-fit portion; and
an annular groove which is formed between said press-fit portion and said seat surface portion;
said inner peripheral wall of said through-hole being plastically deformed by said press-fit portion upon insertion of said inner pipe into said through-hole up to said seat surface portion and entering substantially into said groove without said seat surface being forced to enter into said abutment surface.
2. A coupling according to claim 1, wherein a length of said press-fit portion is approximately equal to a length of said through-hole.
3. A coupling according to claim 1, wherein an outer diameter of an intermediate portion of said press-fit portion is approximately equal to an inner diameter of said through-hole.
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Cited By (8)

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Publication number Priority date Publication date Assignee Title
US6045162A (en) * 1997-01-14 2000-04-04 Usui Kokusai Sangyo Kaisha Limited Joint head for high-pressure metal piping, and common rail to which the piping is to be joined
NL1013928C2 (en) * 1999-12-22 2001-06-25 Petrus Johannes Bus Coupling assembly for joining one plastic pipe to another pipe
WO2001046611A1 (en) * 1999-12-22 2001-06-28 Petrus Johannes Bus Coupling assembly for coupling a plastic pipe with another pipe
US6595558B2 (en) * 2000-05-29 2003-07-22 Usui Kokusai Sangyo Kaisha Limited High-pressure metal pipe with connection head, method of forming the head and connection washer for the connection head
US8025346B2 (en) 2006-12-15 2011-09-27 Caterpillar Inc. Machine component configuration for enhanced press fit and press fit coupling method
US10591103B1 (en) * 2016-02-25 2020-03-17 Mercury Plastics Llc Tube connector assembly
USD961738S1 (en) * 2017-02-24 2022-08-23 Mercury Plastics Llc Connector
US20220397085A1 (en) * 2019-11-21 2022-12-15 Kendrion (Villingen) Gmbh Apparatus for pressure control in a fuel feed of an internal combustion engine having common rail injection

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JPH0630597A (en) * 1992-07-08 1994-02-04 Matsushita Electric Ind Co Ltd Motor driver
JPH06109181A (en) * 1992-09-22 1994-04-19 Meiji Rubber & Chem Co Ltd Joint metal fittings for hose assembly and its manufacture
US5452921A (en) * 1991-10-31 1995-09-26 The Deutsch Company Axially swaged fitting

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* Cited by examiner, † Cited by third party
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US3262721A (en) * 1964-05-01 1966-07-26 Nelson Mfg Co Inc L R Snap action hose fitting
US3326006A (en) * 1964-05-01 1967-06-20 Tecon Corp Pile shells and couplings
JPS44997Y1 (en) * 1966-07-29 1969-01-16
US4049297A (en) * 1975-12-15 1977-09-20 Reneau Bobby J Pipe coupling apparatus
US4030850A (en) * 1976-08-02 1977-06-21 The United States Of America As Represented By The Secretary Of The Army Interlocked joint
US4310184A (en) * 1980-04-28 1982-01-12 Pipe Systems, Incorporated Polyolefin pipe connector sleeve
US4685706A (en) * 1985-03-04 1987-08-11 Clevite Industries Inc. Releasable push-to-connect tube fitting
US4799715A (en) * 1986-07-28 1989-01-24 General Motors Corporation High pressure tube attachment mechanism
JPH0366550A (en) * 1989-08-04 1991-03-22 Daishowa Seiki Co Ltd Numerical control machine tool
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US5452921A (en) * 1991-10-31 1995-09-26 The Deutsch Company Axially swaged fitting
JPH0630597A (en) * 1992-07-08 1994-02-04 Matsushita Electric Ind Co Ltd Motor driver
JPH06109181A (en) * 1992-09-22 1994-04-19 Meiji Rubber & Chem Co Ltd Joint metal fittings for hose assembly and its manufacture

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6045162A (en) * 1997-01-14 2000-04-04 Usui Kokusai Sangyo Kaisha Limited Joint head for high-pressure metal piping, and common rail to which the piping is to be joined
NL1013928C2 (en) * 1999-12-22 2001-06-25 Petrus Johannes Bus Coupling assembly for joining one plastic pipe to another pipe
WO2001046611A1 (en) * 1999-12-22 2001-06-28 Petrus Johannes Bus Coupling assembly for coupling a plastic pipe with another pipe
US6595558B2 (en) * 2000-05-29 2003-07-22 Usui Kokusai Sangyo Kaisha Limited High-pressure metal pipe with connection head, method of forming the head and connection washer for the connection head
US8025346B2 (en) 2006-12-15 2011-09-27 Caterpillar Inc. Machine component configuration for enhanced press fit and press fit coupling method
US10591103B1 (en) * 2016-02-25 2020-03-17 Mercury Plastics Llc Tube connector assembly
USD961738S1 (en) * 2017-02-24 2022-08-23 Mercury Plastics Llc Connector
USD1026179S1 (en) 2017-02-24 2024-05-07 Mercury Plastics Llc Connector
US20220397085A1 (en) * 2019-11-21 2022-12-15 Kendrion (Villingen) Gmbh Apparatus for pressure control in a fuel feed of an internal combustion engine having common rail injection
US11781514B2 (en) * 2019-11-21 2023-10-10 Kendrion (Villingen) Gmbh Apparatus for pressure control in a fuel feed of an internal combustion engine having common rail injection

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